CONTROL SYSTEM FOR INSTRUCTION TRAIN OF INTERMEDIATE LANGUAGE

摘要

PURPOSE:To improve register allotment efficiency in a compiling mode by interposing a virtual basic block and regarding a next basic block substantially as the virtual basic block. CONSTITUTION:The basic block dictionaries are prepared for basic blocks A, B... respectively and the information on the connecting relation is held as shown by a basic block train 1. As shown in a diagram, the basic block corresponding to the loop exit is defined as a block D with the next basic block E defined as branch destinations from blocks D and A respectively according to the contents of the corresponding basic block dictionary. This processing is carried out by a check processing part 2. In an example shown in the diagram, a virtual basic block insertion processing part 3 is actuated for the interpolation of a virtual basic block X. Thus the destination of the block D is equal to the block X and the next basic block is also equal to the block X. This prevents the deterioration of the processing efficiency.